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Finding the Fourth Proportional to 69,605.54, 96,054.28 and 39,390.30

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Solution

The fourth proportional to 69,605.54, 96,054.28 and 39,390.30 is: 54,357.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,605.54 : 96,054.28 = 39,390.30 : x
  2. Step 2: Convert to fraction form
    69,605.54/96,054.28 = 39,390.30/x
  3. Step 3: Cross multiply
    69,605.54x = 96,054.28 × 39,390.30
  4. Step 4: Simplify right side
    69,605.54x = 3,783,606,905.48
  5. Step 5: Solve for x
    x = 3,783,606,905.48/69,605.54
  6. Step 6: Final answer
    x = 54,357.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.